V4L/DVB (13537): ir: Prepare the code for dynamic keycode table allocation

Currently, the IR table is initialized by calling ir_input_init(). However,
this function doesn't return any error code, nor has a function to be called
when de-initializing the IR's.

Change the return argment to integer and make sure that each driver will
handle the error code. Also adds a function to free any resources that may
be allocating there: ir_input_free().

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

7 files changed, 44 insertions, 7 deletions

diff --git a/drivers/media/video/bt8xx/bttv-input.c b/drivers/media/video/bt8xx/bttv-input.c
index 62408cc..84a957e 100644
--- a/drivers/media/video/bt8xx/bttv-input.c
+++ b/drivers/media/video/bt8xx/bttv-input.c
@@ -368,7 +368,10 @@ int bttv_input_init(struct bttv *btv)
 	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 		 pci_name(btv->c.pci));
 
-	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+	err = ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+	if (err < 0)
+		goto err_out_free;
+
 	input_dev->name = ir->name;
 	input_dev->phys = ir->phys;
 	input_dev->id.bustype = BUS_PCI;
@@ -400,6 +403,7 @@ int bttv_input_init(struct bttv *btv)
 	bttv_ir_stop(btv);
 	btv->remote = NULL;
  err_out_free:
+	ir_input_free(input_dev);
 	input_free_device(input_dev);
 	kfree(ir);
 	return err;
@@ -411,6 +415,7 @@ void bttv_input_fini(struct bttv *btv)
 		return;
 
 	bttv_ir_stop(btv);
+	ir_input_free(btv->remote->dev);
 	input_unregister_device(btv->remote->dev);
 	kfree(btv->remote);
 	btv->remote = NULL;
diff --git a/drivers/media/video/cx231xx/cx231xx-input.c b/drivers/media/video/cx231xx/cx231xx-input.c
index 58dd39b..cd135f0 100644
--- a/drivers/media/video/cx231xx/cx231xx-input.c
+++ b/drivers/media/video/cx231xx/cx231xx-input.c
@@ -197,7 +197,11 @@ int cx231xx_ir_init(struct cx231xx *dev)
 	usb_make_path(dev->udev, ir->phys, sizeof(ir->phys));
 	strlcat(ir->phys, "/input0", sizeof(ir->phys));
 
-	ir_input_init(input_dev, &ir->ir, IR_TYPE_OTHER, dev->board.ir_codes);
+	err = ir_input_init(input_dev, &ir->ir, IR_TYPE_OTHER,
+			    dev->board.ir_codes);
+	if (err < 0)
+		goto err_out_free;
+
 	input_dev->name = ir->name;
 	input_dev->phys = ir->phys;
 	input_dev->id.bustype = BUS_USB;
@@ -222,6 +226,7 @@ err_out_stop:
 	cx231xx_ir_stop(ir);
 	dev->ir = NULL;
 err_out_free:
+	ir_input_free(input_dev);
 	input_free_device(input_dev);
 	kfree(ir);
 	return err;
@@ -236,6 +241,7 @@ int cx231xx_ir_fini(struct cx231xx *dev)
 		return 0;
 
 	cx231xx_ir_stop(ir);
+	ir_input_free(ir->input);
 	input_unregister_device(ir->input);
 	kfree(ir);
 
diff --git a/drivers/media/video/cx23885/cx23885-input.c b/drivers/media/video/cx23885/cx23885-input.c
index fea882d..469e083 100644
--- a/drivers/media/video/cx23885/cx23885-input.c
+++ b/drivers/media/video/cx23885/cx23885-input.c
@@ -377,7 +377,10 @@ int cx23885_input_init(struct cx23885_dev *dev)
 		 cx23885_boards[dev->board].name);
 	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(dev->pci));
 
-	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+	ret = ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+	if (ret < 0)
+		goto err_out_free;
+
 	input_dev->name = ir->name;
 	input_dev->phys = ir->phys;
 	input_dev->id.bustype = BUS_PCI;
@@ -404,6 +407,7 @@ err_out_stop:
 	cx23885_input_ir_stop(dev);
 	dev->ir_input = NULL;
 err_out_free:
+	ir_input_free(input_dev);
 	input_free_device(input_dev);
 	kfree(ir);
 	return ret;
@@ -416,6 +420,7 @@ void cx23885_input_fini(struct cx23885_dev *dev)
 
 	if (dev->ir_input == NULL)
 		return;
+	ir_input_free(dev->ir_input->dev);
 	input_unregister_device(dev->ir_input->dev);
 	kfree(dev->ir_input);
 	dev->ir_input = NULL;
diff --git a/drivers/media/video/cx88/cx88-input.c b/drivers/media/video/cx88/cx88-input.c
index 7b20664..92b8cdf 100644
--- a/drivers/media/video/cx88/cx88-input.c
+++ b/drivers/media/video/cx88/cx88-input.c
@@ -360,7 +360,10 @@ int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
 	snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
 	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
 
-	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+	err = ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+	if (err < 0)
+		goto err_out_free;
+
 	input_dev->name = ir->name;
 	input_dev->phys = ir->phys;
 	input_dev->id.bustype = BUS_PCI;
@@ -390,6 +393,7 @@ int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
 	cx88_ir_stop(core, ir);
 	core->ir = NULL;
  err_out_free:
+	ir_input_free(input_dev);
 	input_free_device(input_dev);
 	kfree(ir);
 	return err;
@@ -404,6 +408,7 @@ int cx88_ir_fini(struct cx88_core *core)
 		return 0;
 
 	cx88_ir_stop(core, ir);
+	ir_input_free(ir->input);
 	input_unregister_device(ir->input);
 	kfree(ir);
 
diff --git a/drivers/media/video/em28xx/em28xx-input.c b/drivers/media/video/em28xx/em28xx-input.c
index 5550de9..d96ec7c 100644
--- a/drivers/media/video/em28xx/em28xx-input.c
+++ b/drivers/media/video/em28xx/em28xx-input.c
@@ -367,7 +367,11 @@ int em28xx_ir_init(struct em28xx *dev)
 	usb_make_path(dev->udev, ir->phys, sizeof(ir->phys));
 	strlcat(ir->phys, "/input0", sizeof(ir->phys));
 
-	ir_input_init(input_dev, &ir->ir, IR_TYPE_OTHER, dev->board.ir_codes);
+	err = ir_input_init(input_dev, &ir->ir, IR_TYPE_OTHER,
+			     dev->board.ir_codes);
+	if (err < 0)
+		goto err_out_free;
+
 	input_dev->name = ir->name;
 	input_dev->phys = ir->phys;
 	input_dev->id.bustype = BUS_USB;
@@ -392,6 +396,7 @@ int em28xx_ir_init(struct em28xx *dev)
 	em28xx_ir_stop(ir);
 	dev->ir = NULL;
  err_out_free:
+	ir_input_free(input_dev);
 	input_free_device(input_dev);
 	kfree(ir);
 	return err;
@@ -406,6 +411,7 @@ int em28xx_ir_fini(struct em28xx *dev)
 		return 0;
 
 	em28xx_ir_stop(ir);
+	ir_input_free(ir->input);
 	input_unregister_device(ir->input);
 	kfree(ir);
 
diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c
index 9c6d0ae5..64360d2 100644
--- a/drivers/media/video/ir-kbd-i2c.c
+++ b/drivers/media/video/ir-kbd-i2c.c
@@ -437,7 +437,10 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
 		 dev_name(&client->dev));
 
 	/* init + register input device */
-	ir_input_init(input_dev, &ir->ir, ir_type, ir->ir_codes);
+	err = ir_input_init(input_dev, &ir->ir, ir_type, ir->ir_codes);
+	if (err < 0)
+		goto err_out_free;
+
 	input_dev->id.bustype = BUS_I2C;
 	input_dev->name       = ir->name;
 	input_dev->phys       = ir->phys;
@@ -456,6 +459,7 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	return 0;
 
  err_out_free:
+	ir_input_free(input_dev);
 	input_free_device(input_dev);
 	kfree(ir);
 	return err;
@@ -469,6 +473,7 @@ static int ir_remove(struct i2c_client *client)
 	cancel_delayed_work_sync(&ir->work);
 
 	/* unregister device */
+	ir_input_free(ir->input);
 	input_unregister_device(ir->input);
 
 	/* free memory */
diff --git a/drivers/media/video/saa7134/saa7134-input.c b/drivers/media/video/saa7134/saa7134-input.c
index 439f3d5..744918b 100644
--- a/drivers/media/video/saa7134/saa7134-input.c
+++ b/drivers/media/video/saa7134/saa7134-input.c
@@ -652,7 +652,10 @@ int saa7134_input_init1(struct saa7134_dev *dev)
 	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 		 pci_name(dev->pci));
 
-	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+	err = ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+	if (err < 0)
+		goto err_out_free;
+
 	input_dev->name = ir->name;
 	input_dev->phys = ir->phys;
 	input_dev->id.bustype = BUS_PCI;
@@ -683,6 +686,7 @@ int saa7134_input_init1(struct saa7134_dev *dev)
 	saa7134_ir_stop(dev);
 	dev->remote = NULL;
  err_out_free:
+	ir_input_free(input_dev);
 	input_free_device(input_dev);
 	kfree(ir);
 	return err;
@@ -694,6 +698,7 @@ void saa7134_input_fini(struct saa7134_dev *dev)
 		return;
 
 	saa7134_ir_stop(dev);
+	ir_input_free(dev->remote->dev);
 	input_unregister_device(dev->remote->dev);
 	kfree(dev->remote);
 	dev->remote = NULL;